176 citations · 552 across the 10 of their papers we have counts for
10 papers
Parallax of a Mira variable R Ursae Majoris studied with astrometric VLBI
Akiharu Nakagawa, Tomoharu Kurayama, Makoto Matsui +5
We have measured an annual parallax of the Mira variable R~Ursae~Majoris (R~UMa) with the VLBI exploration for Radio Astronomy (VERA). From the monitoring VLBI observations spannin…
VLBI Astrometry of the Semiregular Variable RX Bootis
Tatsuya Kamezaki, Akiharu Nakagawa, Toshihiro Omodaka +10
We present distance measurement of the semiregular variable RX Bootis (RX Boo) with its annual parallax. Using the unique dual-beam system of the VLBI Exploration of Radio Astromet…
H2O maser motions and the distance of the star forming region G192.16-3.84
Satoshi Shiozaki, Hiroshi Imai, Daniel Tafoya +5
We present the results of astrometic observations of H2O masers associated with the star forming region G192.16-3.84 with the VLBI Exploration of Radio Astrometry (VERA). The H2O m…
Near-Solar-Circle Method for Determination of the Galactic Constants
Y. Sofue, T. Nagayama, M. Matsui +1
We propose a method to determine the galactic constants R_0 (distance to the Galactic Center) and V_0 (rotation velocity of the Sun) from measurements of distances, radial velociti…
VLBI Astrometry of AGB Variables with VERA -- A Semiregular Variable S Crateris --
Akiharu Nakagawa, Miyuki Tsushima, Kazuma Ando +40
We present a distance measurement for the semiregular variable S Crateris (S Crt) based on its annual parallax. With the unique dual beam system of the VLBI Exploration for Radio A…
Distance to VY Canis Majoris with VERA
Yoon Kyung Choi, Tomoya Hirota, Mareki Honma +33
We report astrometric observations of H2O masers around the red supergiant VY Canis Majoris (VY CMa) carried out with VLBI Exploration of Radio Astrometry (VERA). Based on astromet…
Astrometry of HO Masers in Nearby Star-Forming Regions with VERA. III. IRAS 22198+6336 in L1204G
Tomoya Hirota, Kazuma Ando, Takeshi Bushimata +35
We present results of multi-epoch VLBI observations with VERA (VLBI Exploration of Radio Astrometry) of the 22 GHz HO masers associated with a young stellar object (YSO) IRAS…
Distance to NGC 281 in a Galactic Fragmenting Superbubble: Parallax Measurements with VERA
Mayumi Sato, Tomoya Hirota, Mareki Honma +30
We have used the Japanese VLBI array VERA to perform high-precision astrometry of an H2O maser source in the Galactic star-forming region NGC 281 West, which has been considered to…
Distance to Orion KL Measured with VERA
Tomoya Hirota, Takeshi Bushimata, Yoon Kyung Choi +34
We present the initial results of multi-epoch VLBI observations of the 22 GHz H2O masers in the Orion KL region with VERA (VLBI Exploration of Radio Astrometry). With the VERA dual…
Absolute Proper Motions of H2O Masers Away from the Galactic Plane Measured with VERA in the "Superbubble" Region NGC 281
Mayumi Sato, Tomoya Hirota, Mareki Honma +34
We report on absolute proper-motion measurements of an H2O maser source in the NGC 281 West molecular cloud, which is located ~320 pc above the Galactic plane and is associated wit…